Assessing the Acute and Chronic Effects of Palladium on Daphnia magna and the Influence of Natural Organic Matter.

ABSTRACT: In recent decades, rising industrial demand for palladium (Pd), driven by its unique properties and affordability compared to other noble metals, has increased its environmental release into aquatic systems. This highlights the need to assess its effects on organisms, given the lack of standardized toxicity studies and regulations for this element. This study examines the acute and chronic impacts of Pd exposure on D. magna. Acute lethality was assessed over 48 h at measured Pd concentrations ranging from 2 to 110 μg/L, yielding an LC₅₀ of 52 ± 2 μg/L and an LC₁₀ of 33 ± 3 μg/L. The impact of natural organic matter from the Suwannee River on Pd lethality and bioaccumulation was also examined. No mortality occurred at DOC concentrations of 1, 2, 5, and 8 mg C/L, in con

SUBMITTER: Boukhari R 

PROVIDER: S-EPMC12488302 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature